Maternal miR-202-5p is required for zebrafish primordial germ cell migration by protecting small GTPase Cdc42.
J Mol Cell Biol
; 12(7): 530-542, 2020 07 01.
Article
en En
| MEDLINE
| ID: mdl-31742346
ABSTRACT
In many lower animals, germ cell formation, migration, and maintenance depend on maternally provided determinants in germ plasm. In zebrafish, these processes have been extensively studied in terms of RNA-binding proteins and other coding genes. The role of small non-coding RNAs in the regulation of primordial germ cell (PGC) development remains largely unknown and poorly investigated, even though growing interests for the importance of miRNAs involved in a wide variety of biological processes. Here, we reported the role and mechanism of the germ plasm-specific miRNA miR-202-5p in PGC migration (i) both maternal loss and knockdown of miR-202-5p impaired PGC migration indicated by the mislocalization and reduced number of PGCs; (ii) cdc42se1 was a direct target gene of miR-202-5p, and overexpression of Cdc42se1 in PGCs caused PGC migration defects similar to those observed in loss of miR-202-5p mutants; (iii) Cdc42se1 not only interacted with Cdc42 but also inhibited cdc42 transcription, and overexpression of Cdc42 could rescue PGC migration defects in Cdc42se1 overexpressed embryos. Thus, miR-202-5p regulates PGC migration by directly targeting and repressing Cdc42se1 to protect the expression of Cdc42, which interacts with actin to direct PGC migration.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Pez Cebra
/
Movimiento Celular
/
Proteína de Unión al GTP cdc42
/
MicroARNs
/
Células Germinativas
Límite:
Animals
Idioma:
En
Revista:
J Mol Cell Biol
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2020
Tipo del documento:
Article
País de afiliación:
China